Allows leases (4)
I believe the answer is:
lets
This clue is a double definition.
'allows' is the first definition.
('let' can be a synonym of 'allow')
'leases' is the second definition.
('let' can be a synonym of 'lease')
(Other definitions for lets that I've seen before include "we shall serve them again!" , "Yes" , "Leases" , "Allows or causes to" , "Permits" .)